Ear-trumpet.



K. F. HACKBRT.

. BAB. TBUMPET.'

APPLIOATION FILED DEO. 20: N07.

.Patented Oene, 190s.

2 SHEETS-SHEET l.

` waz fm Hy %YM 2 5 :y di alhxa/gni and KARL HAKERT, OF EAST CLEVELAND, OHIO.

Specification of Letters Patent. apprentie am *hmmm 20.1901. sami No. 401,2.

Patented oct. e, v190e.

To all iiiliom it ma/y concern:

Be it'known that'I, KARL F. Hrio xi:ii'r. a

'l citizen of the United-States, residing at East V("l'leveland, in the county ofCuyahoga and State of'Oli'io, have invente-d a certain new 'and useful Imirovement in Ear-Trumpets,

of -whicliuthe ollowing is afull, clear, and

.-jex'at description','reference being had to the 'tiihe intercepts, more efficiently co .Yafperspective .view n'ientlof the partitions and diaphragm; Fig.

accompanying drawings.

' This invention relates to speaking trumpots and more especially refers to improvements for concentrating the sound waves vwhich the Sound receiver of the s eaking` them and transmitting them t-hrou h the tubes and ear'pieees to the ear of t e lis- 4-Reference should be had to the aeeoinpa!v nyin drawin'ga'yrhieh forniva part o the lspieei cationjff/ Y F'gure lis ii front view of the speaking ytribe; Fig. ,12' a section lof the samealonpr tholine Affll; Fig.l is a'perspective of partitions used in the sound receiver, and figL is' n fragmentary view showing the ie. tube of in Y the sound receiver; Fig. is

of a modified arrangen (i 'is a section through the trumpet,the modilied forni of partitions in place; Fig. 7 is a 'pers f'rietional contaet.

. nected to a i member ec'tiv'e view of the trumpet. 'l 44e device consists having ahell or flaring portion at 1 which, hy inean'sof the tubular portion 2, is conl. The portion 2'is tapering in forni, as is likewise the lower p art of the member 3, theiuemher 2 being adapted ,to n'ojectrinto part of the member 3' zuid be held therein in the desired positron by The member-3 is hollow and it hifiircated 'so as to form two di,- ierging pipes 3*--3 which are connected to tubes 4,-these t'erminatin} ir in the'usua-l ein' in emhers 5.

The sound reeeiver has within it,ope oi" more partitions, the drawings showi'ti'gjw'o, although one three, four, orniore might'- he ll owever, experienre has single partition, 'and' a trumpet made: with this number ofpartitions 1s more economical. in manufacture tlianlis one made with lectingtl'iinible for holding the samev of a sound receiver moreover, equally efficient. These parti tions are of triangular form, with the excepi tion-ofthe artition` (i, which is in the form` of a triange with a widened apex, which widened portion,represented at 7', is bent a greaternumber of partitlons, and it'is,l

to approximately va right .angle with the plane of the rest of the partition.

In assembling the various partition meinbers for use, they are soarranged that the base ortion of each partition is bisected by the ot er partitions. Any convenient means may be employed for holdin the partitions in their fixed relation. As s iown,the mem-4 ber 6 is slit .near the center and the other partitionpmeinber 8,'1s" inserted through this slit. These artitions, when assembled, are insertedin the flaring portion of the sound receiver, in such a manner that the member" (i is in a. plane at right an les to the plane of the line A-B,.the part of the m'einbim 6 being seated within the tubulai portion 2, and occupying a position such as tol approximately divide the. tubular portion into t'i'vo e'qiial parts. lf three partitions were used, they would be placed in planes of (i0 degrees to each other, but when only two are used, as is shown in the drawing, they are placed at right angles to'each other, and thiis should divide the flaring portion 1 of the sound ro-V ceiver into four a )proximately equal parte.

At the endo thel tubular portion 2 is placed a diaphragm 10 held in place hy a thiinble i) cooperating with the walls of the tubular portion 2. The diaphragm may be i made of any suitable flexible material.

lu Figs. 5 audi? isshown a modifica-tion of niy trumpet. iny invention previously shown and exlained, there may benne or more partitions,

uit two are preferred. ln this ease the partitions 11 and l2 do 'not extend into the throat of thetiunipet'. hutl only part way into the Haring portion of the trumpet.

As in the embodiment of Each partition is in the form of a trapezoid,

and when assembled they are inserted in the tubo iii.thesame manner and in the same-re- .laton to each other as in the form ofmy invention previously'described., lAt the botloin of thc flaring portion is seated n. conical ring i3 en raging the Lwalls of the ,flaring portion an -a diaphragm is stretched across at. the lower edges. As in the previous case, the diaphragm 14 is iliade of any suitable movable with them. and bent at a proximately right angles to Spitable means for holding the partitionsin 1 the plane of t e partition. o the trumpet are provided, one form ot such A 5. A sound receiv'er formed with a flaring means being shown at. l5 in l41 igs. ti and T. portion and a tubular portion at right lhe 'operation is as follows: The sound angles thereto, a partition member extending viln'ationsl coming from the direction of the f through the Haring portion and into tlie-- 60 arrow D or in the opposite direction thereto, tubular portion, and an imperforate dim strike upon either side ofthe partition and g phragm placed beyond the said partition. are deflected along the same into the tubular i 6. In a speakin trumpet. a Hari porportion :'2- and against diaphragm l0. :Like-v i tion, a artition t ierein, and a diapragm wise sound vibrations approaching from the carried y said artition. l direction of the arrow C or in the opposite i 7. In a. speaking ti'umpet, a flaring pordireetion strikeagainst the artition S and ,i tion, a plurality of partitions therein, and b v cooperation with the partition t are cara diaphragm mounted upon Said partitions rind along into the tubular portion i2 and i andl below the same. against the'diaphragm l0. l 8. A sound receiver formed with n ar- 70 From the foregoing description it will be i ing portion and a tubular portion', a pluralseen that sound 'vibrations coming from any ity of partitions in said sound receiver, one direction will iinpinge against and be deg of said artitionsl extending beyond the ficited by at. leastone partition, and be conothers anil)into the said tubular portion.Lv ducted to the ear of the person using the inl 9. A sound receiver formed with a flaring strument. l i portion, a tubular portion, a plurality of par- 'lhe function of the diaphragm l0 is to so titions in said sound receiver, one of said modify the sound vibrations as to make a partitions extendin beyond the others and clearer impression upon the ear of the lisinto the said tubu ar portion, and a dia tener. h pliragmin said tubular portion. 80 ln the modified form of my invention the 10.` The combination of a sound receiver sound vibrations 'vill impiiige aga-inst and and a tube, a lurality of partitions insaid be deflected by the partit-ions as previously receiver, one o? said partitions extending belcsorilnid. The vibrations will next be diyond the others with its lower portion ret-ted against the diaphragm and then con? formed to convey sound vibrations 'into the 85 ducted to the ear 'of the hearer. tube.

]c1aim:I 11. A sound receiver formed with a ar- 1. A sound receiver, comprising ay flaring ing portion, a tubular portion at right angles portion and a tubular portion at right angles thereto, a partition member having its lower thereto, a partition therein, the lower porportion bent :1t-approximately ri ht angles 90 tion being curved to convey the sound vibrato the lane of the partition, the ower por- Vtions into the tubular portion. tion otP the partition being held within the 42. A sound vreceiver formed with a flaring tubular portion. ,portion and a tubular'portion at right. an les In testimony whereof, I hereunto aix my t'peretol.' .piartit-ion member exten ing signature in the presence of two witnesses. 95 tn'ougi tie aring portion and into the v. tubular portion. l KARL F' 'HACKERT '3. A sound receiver formed-with a lar- Titnesses-z i ing portion and a tubular portion, a plural- S.. E. Fours, ity 'of intersecting partition members in seid BRENNAN B; WEBfljo flexible material. This ring-shaped member g may be held in position by any suitablei means, but preferably it'. is fastened to the partition membersl themselves so as to be retriangular form having its apex broadened sound receiver, one of said partitions extendf ing into said tubular portion. 4. In a sound receiver, a partition of 

